“20/20” goes inside the polygamist community of the FLDS church where the iron grip of their prophet, Warren Jeffs, is beginning to crack. ABC News Anchor Dan Harris follows the stories of three parents in their quest to extract their children from what they see as a life of hardship and servitude,

And we begin with those deadly floods. Mothers and their children surrounded by rising waters. At least 12 now dead. The frightening images tonight out of Utah. The raging waters. You can see how fast-moving they are. Two cars, families inside both of them, suddenly overwhelmed by the floods.